Car-truck.



H. G. BUHOUP.

GAR TRUCK.

APPLIOATION FILED AUG.1,2, 1910.

' Patented M1328, 191.1.

2 SHEETSSHEET 1.

..11 IIILHPTHHH. l l n I r\ H. C. BUHOUP.

OAR TRUCK.

APPLICATION FILED AUG` 12, 1910.

` Patented 111211128, 1911.

2 SHEBTS-SHBBT 2.

lHARTKE( C. BUI-IOUP, lOF CHICAG, LLNOIS.

Patented Mar. 28, 19M.. Serial No. 576,852.

CAR-TRUCK.

987,695. Specification of Letters Patent.

Application filed August 12, 1910.

To all whom it may concern:

Be it known that l, HARRY C. BnnoUr, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Trucks; and I do lhereby declare the following to be a full, `clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the construction of trucks for railway vehicles and is particularly designed to aliord a truck of this character in which the component parts are so formed and combined that the structure is one possessing great flexibility, thus prolonging the life, not only of the truck itself, but of the vehicle as a Whole, by permitting the' truck to readily and yieldingly accomwrnodate itself to high and low joints and sags and inequalities in the track.

To this end, the principal feature of iny invention, generally stated, consists in combining, with the side-frames of a car truck, a spring supported bolster between' which and the side-frames are interposed load transmitting devices having rocking` engagement with the side-frames, whereby, when the truck passes over a high or low joint in the track, the side-t ames and load transmitting devices are permitted to rock upon each other.

There are other, minor, Jfeatures of invention residing.` in particular combinations and elemental constructions, all as will hereinafter more fully appear.

ln the drawings chosen for the purpose of illustrating my invention, the scope whereot` pointed out in the claims, Figure l is a side elevation of a ear truck embodying my invention; Fig. 2 is a vertical section oit a portion of the ear truck, .taken in -the plane of the line 2--2, Fig. l, the bolster being' shown in elevation; Fig. 3 is a vertical section ott a portion of the car truck, taken in the plane of the line Fig. l; F". Llis view corresponding to Fig. Qi: but illustrating a moditled form of my invention; Fing. 5 is a side elevation ol: a car truck illustrating a further modified torm of my invention; Fig. t5 is a vertical section o't a portion of the car truck illustrated in Fig. 5, ,the section being taken in the plane of the f 5, and the bolster beingr shown in elevation.

Fig. 7 is a detail ele.

ration ot' an equalizer bar such as is em'- ployed in the forms of truck illustrated in Figs. 1, 2, 3 and 4; and Fig. S is a detail elevation of an equalizer bar such as is employed in the form of truck illustrated in Figs. 5 and 6.

(.orresponding reference symbols refer to like parts Wherever theyoccur.

l will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same. As both sides of each otl the several forms of trucks illustrated are designed to be -identical in construction, only one side of each form of construction will be described.

n the drawings, l indicates the sidelrames and 2 the bolster. The side-:trames may be of any suitable character, but it `is preferred to forni them of cast steel of general I-beam cross-section, each side-'frame havingl a centrally disposed, tangular, bolster opening bounded by the top and bottom rails of the side-frame and by the vertically extending` columns As shown in Fig. fl, when but a single equalizer is employed, the columns 3 may be slotted, as at 3, to permit the passage oLt such equalizer. The bearing` tace or seat l on the side-:trame at the lower end of the bolster opening.y for cngagin,9,` and supporting the load transmitting device so as to permit Ithe latter to have a rocking` movement relative to the side-frame, is preferably flat and of somewhat greater breadth than the upper portion of the side-frame, the rocking 'ot the load transmitting` device with respect to the side-frame being` in'el'erably provided for by forming' such load transmitting device with curved bearingl faces adapted to engage the seat et. Upon opposite sides of the bolster opening the side frame is also provided with openings 5 for the reception ol. the equalizer `springs and springcaps, the bas s of these apertures forming supporting ats 6 on which the respective equalizer springs l/lrest.

The bolster Q, which projects into the bolster-openings of the side-trames :nid which may be maintained in proper, re'tically slidable, relation therewith by means of the common form et column guides 7, may be or" any desired construction; but in order that the turning" or rocking movements of the side-frames l may not transmit any injurious .twisting or torsional preferably recl llO - rigidly secured.

In the construction shown in Figs. 1, 2 and 3 the spring-seats are formed as meinbers 11 having convexedly curved bottoms which engage and are adapted to rock upon the respective bearing seats 4 at the lower end of the bolster openings of the sideframes 1, thc members 11 thereby not only performing the function of spring-seats, but also of load' transmission devices for transmitting the superimposed load to the side frames. In the'embodiment of my invention illustrated in the figures of the drawings last refeiiu'ed to, a plurality of equalizers 13 'are employed and the members 11 are, therefore, preferably fashioned with a corresponding number of slots or passages 12 to receive such equalizers. Asshown, the slots 12, which extend through the members 11 in a direction parallel to the side-frames, are of sulicient height to permit vertical oscillations of the equalizers 13 therein, the top Walls of the slots pref :ably conforming to the upper faces of the adjacent portions of the corresponding equalizers 13 to constitute -seats or bearings therefor as well as to limit the upward movement thereof, and the side walls of said slots'serving as guides for said equalizers.

The bolster spring-seat 11n illustrated in Fig. 4 is identical in function and substantially identical in form with the bolster spring-seat 11 shown in Figs. 1, 2 `and 3 and heretofore described, the only difference being that but one, centrally disposed, equalizer receiving slot 121 is required, since in this modified form of my invention a single equalizer 13 is employed. `The equalizers 13, whether one, as in".A Fig..4, or a plurality, as in Figs. 1, 2, and 3, be employed, are yieldingly supported on ,the side-frames 1 by means of springs 14l which rest upon the corresponding seats 6 of the side-frames. Be-

tween each equalizer spring 14 and the adja- 'c'ent end or ends of the equalizer or equalizers 13 a rocking spring-seat 15 is 'preferably interposed. As shown more particularly in Figs. 1, 5- and 7, the connection of the equalizers 1,3 and spring-seats 15 may be conveniently maintainedy by forming the ends of each equalizer with cylindrically curved recesses 13a which are adapted to tit-appropriate, correspondingly curived ribs formed integral with the spring-seat members l5. The equalizers 13 are Ipreferably of yoke-like form and fashioned with. a flat I' upper bearing surface 13b adapted to engage the load transmitting spring-seats 11 and 11a of the two forms of my invention illustrated in Figs. 1 to 4, inclusive.

The embodiment of my invention illustrated in Figs. 5, 6 and 8 is preciselylike that illustrated in Figs. 1, 2 and 3, except that the equalizers 17 employed are formed with convexly curved, lower bearing l'faces' 18wlnch engage and are adapted to rock upon the corresponding seats 4 of the sldelframes 1, the bolster-spring-seats 19, which imposed upon the bolster to the sidqgframes,

are adapted to have a rocking movement with respect to their respective side-frames. When a truck constructed in accordance with my invention passes over a high or low spot in the track, the side-frame on that side will move upwardly or downwardly, as the case may be, with a turningmovement,caus ing a compression of one or the other of the equalizer springs 14 and a rocking` movelnent of the load transmission member on the support-ing seat 4 of the side-frame, the sideframes, spring-planks, bolster and all other parts of the truck being thereby wholly relieved of all injurious twisting strains.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a car truck, the combination with side-frames, of a bolster', springs for yieldingly supporting said bolster, spring-seats for supportin said springs, and springplanks secured to said spring-seats, said spring-seats being adapted to have a rocking movement with respect to their respeel. tive side-frames.

2. In a car truck, the combination with `side-frames, of a bolster, springs for yieldingly supporting said bolster, and springseats for supporting said springs, said spring-seats having curved bearing faces adapted to engage and rock upon their respective siderames. r f

3. In a car truck, the combination with side-frames, of a bolster, springs for yieldingly supporting said bolster, spring-seats for supporting said'springs, and spring'- planks rigidly secured to said spring-seats, said spring-seats having curved lower bearing faces adapted to engage and rockI upon their respective side-frames.

4. In a car truck, the combination with Side-frames, of a Mistel-,springs for yieldenga-gin vside-frames each having a bolster opening esmas ingly supportiing said bolster, spring-seats sai said sprlngs, and equalizers yieldingly supported on their respective side-frames.

5. in a car` therein, of a bolster, springs for yieldingly supporting saidObolster, spring-seats engaging said side-frames for supporting said springs, equalizer springs arranged on opposite sides of the bolster opening of each siderame, and equalizers yieldingly supported on thesi'de-frames by their respective equalizer springs.l f

6. ln a car truck, the combination with side-frames for supporting' truck, the combination with -side-frames each lhaving y a bolster opening and columns, of a bolster having curved faces ladjacent to said columns, springs for yieldinglyA supporting said bolster, and spring-seats for supporting said springs, said spring-seats engaging and being adapted to rock upon their respective side-frames. 1. En a car truck, the combination with eide-frames each having a vbolster opening and columns, of a bolster having curved faces adjacent to said columns, springs for yieldingly supporting said bolster, springseats for said springs, equalizers engaging their respective spring-seats, and equalizer springs yieldingly supporting said equalizers on their respective side-frames.

8. in a car truck, the combination with side-frames, of a bolster, springs for yieldingly supporting said bolster, spring-seats for supporting said springs, spring-seats having a curved face adapted to engage and rock upon the adjacent sideframe and each of said spring-seats beingv also recessed to receive an equalizer, equalizers engaging said spring-seats, and springs seated upon each side-frame and yeldingly supporting their respective equalizers.

In testimon whereof aix my signature, in presence oi two subscribing Witnesses.

HARRY C. BUH'UP.

Witnesses:

D. B. Meson, H. W. Suriname.

each of said 

